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79-93 Ford Mustang Strange Manual Brake Kit

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$144.99
SKU:
3008-01
Instructions:
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79-93 Ford Mustang Strange Manual Brake Kit

$144.99

79-93 Ford Mustang Strange Manual Brake Kit

$144.99

     Get a jump start on converting your race 79-93 Mustang to a manual brake setup to save weight and space over the factory brake booster system. Includes a custom Billet Mounting plate with studs for the firewall and master, Strange 1.03" or 1.125" dual inline master cylinder with lines exiting towards the fender and custom adjustable brake rod. Will require making new lines from master cylinder to existing brake lines. Does not bolt up directly to factory lines.
 
1.03" bore master cylinder is typically used in cars with stock drums and factory disc brakes up front. 1.125" bore master cylinder would be used in applications with disc brakes on all four corners, especially when using aftermarket brakes.
 

Product Features
» 45 Minute Install
» Eliminates brake booster
» Black Anodized Mounting Plate
» Brake Lines Exit Towards Fender
» CNC Machined from Billet Aluminum
» Strange 1.03" or 1.125" Dual Inline Master Cylinder Available
» Does not work with the factory brake light switch.  Use Allstar 76251 or equivalent
 

Installation:
Installs in - 2 hours. Requires modifying of brake pedal for proper brake pedal rod ratio and custom brake lines.
 
Fitment:
1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 GT LX V8 Cobra Mustang Roush & Saleen Vehicles.
 
Made In USA

Brake Pedal Ratio

When converting your Power Brake System to a Manual Brake System, the first thing you need to consider is that you are removing the ‘Power’ from the brake system. In other words, there will be no more power assist, and you will have to rely on good old mechanical leverage to get the car stopped properly.

If you just install your UPR Manual Brake kit and hook it up without modifying the factory Power Brake Pedal, you will not physically be able to apply enough muscle to the pedal to get the car to stop like it should.   Why? Brake Pedal Ratio.

Brake Pedal Ratio is the relationship between the brake pedal pivot point at the pedal mount, the brake pedal push rod location, and the brake pedal pad itself which makes up the leverage to produce pressure in the braking system. The power assist brake pedal would use a lower ratio since not as much leverage is required to achieve the correct brake system pressure (usually about 1200psi at the front caliper). When switching to manual, you will want more mechanical leverage to compensate for the loss of power assist. It’s the same principle as using a long breaker bar to loosen a stubborn bolt.

The UPR Manual Brake Kits use commonly available high-quality Strange Engineering 1.125 inch bore master cylinders which is a good fit for most Mustang disc brake systems. A good ballpark pedal ratio to shoot for with this size master cylinder is 6 or 6 1/2 to 1. Driver preference can determine if you want more or less leverage.

To determine your pedal ratio, start by measuring from the pivot point, (where the pedal assembly attaches to the body or frame) to the center of the brake pedal pad (A). Next, measure from the pivot point to the master cylinder push rod connection (B). Divide the first measurement (A) from the second (B) and the result is your pedal ratio. You will modify the pedal to get the desired ratio by moving the pushrod mounting point (generally going up). For example, let’s say the power brake pedal measures 13 inches from the center of the pivot to the center of the pedal pad, and the pushrod mount is 3 inches from the pivot 13÷3= 4.33 so we’ll say a 4 to one ratio. Not good for a manual set up. If we do some quick math to see what moving the hole up an inch will do, 13÷2= 6.5 now we’re right where we want to be. Mark the location, and that will be where you will weld the stud or drill and install a Grade 8 bolt to connect your brake push rod.

pedalratio.jpg

The UPR Billet Mustang Manual Brake Adapter Plates are machined to a common angle. You may need to add shims or washers behind the plate to achieve the desired pushrod angle for your application.

The UPR Manual Brake Kit is a great way to start on your custom brake system. Custom brake lines and other components like proportioning valves and fittings will be necessary.

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The following items will not be accepted as returns. Tuners and tuning devices, opened and or installed clutches (removed from original packing), non-defective items that have been installed, gift certificates, catch cans, fuel pumps, fuel injectors, nitrous kits, shocks, struts. Issues with any of the listed items must be taken up directly with the manufacturer.

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